luske et ai



Am. 10, 1923. K. LUSKE ET AL sTovE Filed Aug.

Patented Apr. 10, i923.

NITED Nsrarus man LsKE, or BUDAPEST, ann nunon MoUssoNe- Ann PAUL Moussone, or

roLNA-Hoeynsz, HUNGARY.

STOVE.

.Application led August 29, 1921.

To aZZ whom it may concer/n Y Be it known that we, KARL LsKn and ANDon MoUssoNG and PAUL MoUssoNG, citizens of Hungary, residing at Budapest and .5 Tolna-Hogyesz, respectively, have invented certain new and useful Improvements in Stoves (for which we have filed an application in Hungary August 2, 1920), of which the following is a specification.

Our invention relates to stoves and more especially to stoves of the down-draft type.

One object of our invention is to provide a stove capable'of affecting perfect combustion of the fuel.

Another object isfto provide a stove in which coals of poor quality and containing large percentages of ash may be used.`

Other objects will be partly obvious and partly pointed out hereinafter.

ln the accompanying drawing an embodiment of our invention is illustrated by way of example.

Fig. l is a sectional elevation of the stove.

Fig. 2 is a sectional elevation on a plane t a right angle with the sectional plane of ig. l.

Fig. 3 is a perspective view of the stove. Fig. t is a sectional elevation on a larger scale of the means for supplying combustion air.

Fig. 5 is a perspective view of the grate at the bottom of the fuel shaft.

Fig. 6 is a perspective view of the vertical grate. Referring to Figs. l and 2, Z is a casing provided at the top or at the side wall with a door d for charging the fuel, and forming as airtight a closure as possible. b is a grate dividing the casing Z into a larger upper part forming the fuel shaft and a smaller lower part g forming the ash pit.

-iis the exit flue communicating by means of the substantially vertical flues 7L,

7L and by means of openings .m with the ash pit g. f is a tightly closing door for removing the ash from the pit. is a nozzle for the admission of the combustion air immediately above the grate b at the bottom of the fuel shaft provided with means, as the rotary valve 1", for regulating the air admission. As shown in the drawing, the nozzle r is preferably arranged on a door e on the side wall of the casing Z, which door consist most preferably of two parts 05 e, e. The lower part e of the door can be Serial No. 496,671.

opened for inspection without admitting too much air, while both parts e, e can be opened for the purpose of lrindling the fire. ,7c is a vertical grate located behind the door e, e with faces inclined towards the grate Z) and provided preferably with openings 7c. j is an apertured fire pot receiving the fuel and serving at the same time as means to keep .the part of the grate Z2 adjacent to the discharge end ofthe nozzle a' free of coal and ashes. Hence the combustion air entering the fuelshaft at its bottom through the nozzle r will be divided, one part of the air draft being directed through the brazier at the bottom of the fuel column contained 'l in the apertured fire pot causing the gasification of the fuel, while the other part of the air will pass directly through the openings b of the grate without coming in touch with the fuel, will become heated by passing the hot grate and will be directed towards the flames formed underneath the grate and will complete the combustion of the gases on the outer surface of the flames. If no apertured fire pot j is used, otherl `means, must be provided to keep free of coal,

the part of the grate adjacent to the nozzle r, for example, by means of the vertical grate 7c which in this case must be placed over the part of the grate to be kept free of coal.

As will be seen from the drawing, it is most preferable to arrange the openings fm of the ash pit communicating with the iiues h, 7L on two opposite sides of the grate l and the discharge end of the air-nozzle 7 on the third side of the grate, whereby the complete combustion of the inverted flames is absolutely granted.

We claim as our invention and desire to secure by Letters Patent l. In a down-draft stove, the combination of a substantially air-tight casing, an aper tured lire pot, grate and ash-pit. an exit iiue communicating with the said ash-pit. means to admit air to the bottom of the fuel shaft and means to keep free of fuel a part of the grate adjacent to the discharge end of the air admission, permitting part of the air to flow directly through the said free part of the grate and part of the air to pass through the fuel before reaching the grate, said free part of the grate being provided with openings for the passage of the air.

2. In a down-draft stove, the combination aaumlN l (l U of a substantially airtight casing, an apertured fire pot, grate and ash-pit, an exit flue communicating on tiro opposite sides oi the grate u ith the said ash-pit, means to admit on the :third side at right angles to the former tivo sides of the grate air to the bottom ot the liuel shalt and means to keep free o'i fuel a part of the grate adjacent to the discharge endof the air admission, permitting part o1 the air to How directly through the said tree partoi' the grate and part of the air to pass through the fuel before reaching the grate, said tree part of the grate being provided with openings for the passage ot' the air.

3. 'ln a down-draft stove, the combination ot a substantially air-tight casing, an apertured lire pot, grate and ash-pit, an exit flue communicating with the said ash-pit, a door in the said casing adjacent to the bottom of the 'fuel-shaft, a nozzle in said door commit-ni :ating with the atmosphere and having its discharge end located over one edge of the said grate and means to keep `free of 'fuel apart oi the grate adjacent to the discharge 'ndl of the said nozzle, permitting part of the air to dow directly through the said free part of the grate and part of the air to pass through the luel before reaching the grate, said 'i'ree part of the grate being provided with openings Yfor the passage of the air.

grate with the said ash-pit, a door in the said casing adjacent to the bottom of the fuelsha'ft, a nozzle 1n said door communicating with the atmosphere and having its discharge end located over one edge of the said grate and means to keep free of fuel a part ot the grate-,adjacent to the discharge end oit thev said nozzle, permitting part of the air to flow directly through the said free part of the grate and part ol the air to pass through the fuel betereV reaching the grate, said free part oit' the grate being provided with openings 'for the passage of the air.

5. In a down-draft stove, the combination of a substantially air-tight casing, an apertured re pot, grate and ash-pit,- an exit flue communicating on two opposite sides of the grate With the said ash-pit. a doorl in the said casing adjacent to the bottom of the fuelshatt, a nozzle in said door communicating with the atmospherev and having its discharge end located over'one edge of the said grate, meansto regulate the air admission through the said nozzle and a substantially vertical grid to keep free of fuel a part of the gratev adjacent Ito the discharge end of the said nozzle, permitting part of the air 'to 'flow directljT through the said free part of the grate and part of the air to pass through the fuel before reaching the grate, said tree part ofthegrate being provided with openings for the passage of the air.

ln testimony whereof We aiiix our signatures.' i

KARL LUSKE.

ANDOR ,li/IOUSSONG. PAU L MOUSSONG.

Witnesses ,CHARLEs 'MEDQUna `Erratum F.' PANZIMYL. 

